/* 
 * CVS identifier:
 * 
 * $Id: IntegerSpec.java,v 1.14 2001/09/20 12:31:08 grosbois Exp $
 * 
 * Class:                   IntegerSpec
 * 
 * Description:             Holds specs corresponding to an Integer
 * 
 * 
 * 
 * COPYRIGHT:
 * 
 * This software module was originally developed by Raphaël Grosbois and
 * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
 * Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
 * Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
 * Centre France S.A) in the course of development of the JPEG2000
 * standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
 * software module is an implementation of a part of the JPEG 2000
 * Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
 * Systems AB and Canon Research Centre France S.A (collectively JJ2000
 * Partners) agree not to assert against ISO/IEC and users of the JPEG
 * 2000 Standard (Users) any of their rights under the copyright, not
 * including other intellectual property rights, for this software module
 * with respect to the usage by ISO/IEC and Users of this software module
 * or modifications thereof for use in hardware or software products
 * claiming conformance to the JPEG 2000 Standard. Those intending to use
 * this software module in hardware or software products are advised that
 * their use may infringe existing patents. The original developers of
 * this software module, JJ2000 Partners and ISO/IEC assume no liability
 * for use of this software module or modifications thereof. No license
 * or right to this software module is granted for non JPEG 2000 Standard
 * conforming products. JJ2000 Partners have full right to use this
 * software module for his/her own purpose, assign or donate this
 * software module to any third party and to inhibit third parties from
 * using this software module for non JPEG 2000 Standard conforming
 * products. This copyright notice must be included in all copies or
 * derivative works of this software module.
 * 
 * Copyright (c) 1999/2000 JJ2000 Partners.
 * */
package jj2000.j2k;

import jj2000.j2k.util.*;
import jj2000.j2k.*;

import java.util.*;

/**
 * This class extends ModuleSpec and is responsible of Integer specifications
 * for each tile-component.
 *
 * @see ModuleSpec
 * */
public class IntegerSpec extends ModuleSpec {


    /** The largest value of type int */
    protected static int MAX_INT = Integer.MAX_VALUE;

    /**
     * Constructs a new 'IntegerSpec' for the specified number of tiles and
     * components and with allowed type of specifications. This constructor is
     * normally called at decoder side.
     *
     * @param nt The number of tiles
     *
     * @param nc The number of components
     *
     * @param type The type of allowed specifications
     * */
    public IntegerSpec(int nt,int nc,byte type) {
        super(nt,nc,type);
    }

    /**
     * Constructs a new 'IntegerSpec' for the specified number of tiles and
     * components, the allowed specifications type and the ParameterList
     * instance. This constructor is normally called at encoder side and parse
     * arguments of specified option.
     *
     * @param nt The number of tiles
     *
     * @param nc The number of components
     *
     * @param type The allowed specifications type
     *
     * @param pl The ParameterList instance
     *
     * @param optName The name of the option to process
     * */
    public IntegerSpec(int nt,int nc,byte type,ParameterList pl,
                       String optName) {        
        super(nt,nc,type);
        
        Integer value;
	String param = pl.getParameter(optName);
        
        if(param==null) { // No parameter specified
            param = pl.getDefaultParameterList().getParameter(optName);
            try {
                setDefault(new Integer(param));
            } catch(NumberFormatException e) {
                    throw new IllegalArgumentException("Non recognized value"+
                                                       " for option -"+optName+
                                                       ": "+param);
            }
            return;
        }
        
	// Parse argument
	StringTokenizer stk = new StringTokenizer(param);
	String word; // current word
	byte curSpecType = SPEC_DEF; // Specification type of the
	// current parameter
	boolean[] tileSpec = null; // Tiles concerned by the specification
	boolean[] compSpec = null; // Components concerned by the specification
	
	while(stk.hasMoreTokens()) {
	    word = stk.nextToken();
            
	    switch(word.charAt(0)) {
	    case 't': // Tiles specification
  		tileSpec = parseIdx(word,nTiles);
 		if(curSpecType==SPEC_COMP_DEF) {
 		    curSpecType = SPEC_TILE_COMP;
 		} else {
 		    curSpecType = SPEC_TILE_DEF;
                }
  		break;
	    case 'c': // Components specification
 		compSpec = parseIdx(word,nComp);
 		if(curSpecType==SPEC_TILE_DEF) {
 		    curSpecType = SPEC_TILE_COMP;
 		} else {
 		    curSpecType = SPEC_COMP_DEF;
                }
 		break;
            default:
                try {
                    value = new Integer(word);
                } catch(NumberFormatException e) {
                    throw new IllegalArgumentException("Non recognized value"+
                                                       " for option -"+optName+
                                                       ": "+word);
                }
                
		if(curSpecType==SPEC_DEF) {
		    setDefault(value);
		} else if(curSpecType==SPEC_TILE_DEF) {
		    for(int i=tileSpec.length-1; i>=0; i--)
			if(tileSpec[i]) {
			    setTileDef(i,value);
                        }
		} else if(curSpecType==SPEC_COMP_DEF) {
		    for(int i=compSpec.length-1; i>=0; i--)
			if(compSpec[i]) {
			    setCompDef(i,value);
                        }
		} else {
		    for(int i=tileSpec.length-1; i>=0; i--) {
			for(int j=compSpec.length-1; j>=0 ; j--) {
			    if(tileSpec[i] && compSpec[j]) {
				setTileCompVal(i,j,value);
                            }
			}
		    }
		}
                
		// Re-initialize
		curSpecType = SPEC_DEF;
		tileSpec = null;
		compSpec = null;
		break;
            }
        }
        
        // Check that default value has been specified
        if(getDefault()==null) {
            int ndefspec = 0;
            for(int t=nt-1; t>=0; t--) {
                for(int c=nc-1; c>=0 ; c--) {
                    if(specValType[t][c] == SPEC_DEF) {
                        ndefspec++;
                    }
                }
            }
            
            // If some tile-component have received no specification, it takes
            // the default value defined in ParameterList
            if(ndefspec!=0) {
                param = pl.getDefaultParameterList().getParameter(optName);
                try {
                    setDefault(new Integer(param));
                } catch(NumberFormatException e) {
                    throw new IllegalArgumentException("Non recognized value"+
                                                       " for option -"+optName+
                                                       ": "+param);
                }
            } else {
                // All tile-component have been specified, takes the first
                // tile-component value as default.
                setDefault(getTileCompVal(0,0));
                switch(specValType[0][0]) {
                case SPEC_TILE_DEF:
                    for(int c=nc-1; c>=0; c--) {
                        if(specValType[0][c]==SPEC_TILE_DEF)
                            specValType[0][c] = SPEC_DEF;
                    }
                    tileDef[0] = null;
                    break;
                case SPEC_COMP_DEF:
                    for(int t=nt-1; t>=0; t--) {
                        if(specValType[t][0]==SPEC_COMP_DEF)
                            specValType[t][0] = SPEC_DEF;
                    }
                    compDef[0] = null;
                    break;
                case SPEC_TILE_COMP:
                    specValType[0][0] = SPEC_DEF;
                    tileCompVal.put("t0c0",null);
                    break;
                }
            }
	}
        
    }

    /** 
     * Gets the maximum value of all tile-components.
     *
     * @return The maximum value
     * */
    public int getMax() {
	int max = ((Integer)def).intValue();
	int tmp;

	for(int t=0; t<nTiles; t++) {
	    for(int c=0; c<nComp; c++) {
		tmp = ((Integer)getSpec(t,c)).intValue();
		if(max<tmp)
		    max = tmp;
	    }
	}

	return max;
    }

    /** 
     * Get the minimum value of all tile-components.
     *
     * @return The minimum value
     * */
    public int getMin() {
	int min = ((Integer)def).intValue();
	int tmp;

	for(int t=0; t<nTiles; t++) {
	    for(int c=0; c<nComp; c++) {
		tmp = ((Integer)getSpec(t,c)).intValue();
		if(min>tmp)
		    min = tmp;
	    }
	}

	return min;
    }

    /** 
     * Gets the maximum value of each tile for specified component
     *
     * @param c The component index
     *
     * @return The maximum value
     * */
    public int getMaxInComp(int c) {
	int max = 0;
	int tmp;

	for(int t=0; t<nTiles; t++) {
	    tmp = ((Integer)getSpec(t,c)).intValue();
	    if(max<tmp)
		max = tmp;
	}

	return max;
    }

    /** 
     * Gets the minimum value of all tiles for the specified component.
     *
     * @param c The component index
     *
     * @return The minimum value
     * */
    public int getMinInComp(int c) {
	int min = MAX_INT; // Big value
	int tmp;

	for(int t=0; t<nTiles; t++) {
	    tmp = ((Integer)getSpec(t,c)).intValue();
	    if(min>tmp)
		min = tmp;
	}

	return min;
    }

    /** 
     * Gets the maximum value of all components in the specified tile.
     *
     * @param t The tile index
     *
     * @return The maximum value
     * */
    public int getMaxInTile(int t) {
	int max = 0;
	int tmp;

	for(int c=0; c<nComp; c++) {
	    tmp = ((Integer)getSpec(t,c)).intValue();
	    if(max<tmp)
		max = tmp;
	}

	return max;
    }

    /** 
     * Gets the minimum value of each component in specified tile
     *
     * @param t The tile index
     *
     * @return The minimum value
     * */
    public int getMinInTile(int t) {
	int min = MAX_INT; // Big value
	int tmp;

	for(int c=0; c<nComp; c++) {
	    tmp = ((Integer)getSpec(t,c)).intValue();
	    if(min>tmp)
		min = tmp;
	}

	return min;
    }
}

